# 2007 Chevrolet Silverado 1500 - Rough idle

**URL:** <https://community.cartalk.com/t/2007-chevrolet-silverado-1500-rough-idle/160418>\
**Category:** Maintenance/Repairs\
**Tags:** chevrolet\
**Created:** [March 6, 2020, 4:27am UTC](https://community.cartalk.com/t/2007-chevrolet-silverado-1500-rough-idle/160418 "2020-03-06T04:27:37Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![julie35](https://avatars.discourse-cdn.com/v4/letter/j/3be4f8/32.png) [@julie35](https://community.cartalk.com/u/julie35)\
**Post date:** [March 6, 2020, 4:27am UTC](https://community.cartalk.com/t/2007-chevrolet-silverado-1500-rough-idle/160418/1 "2020-03-06T04:27:37Z")

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rough idle, changed distributor cap 5 times in 5 mos, plugs and wires same, coil wire pretty much changed everything on it now and still a POS!! I HATE chevy. any ideas why the cap and coil are failing at this rate?

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**Author:** ![Nevada\_545](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nevada_545/32/41232_2.png) [@Nevada\_545](https://community.cartalk.com/u/Nevada_545)\
**Post date:** [March 6, 2020, 5:35am UTC](https://community.cartalk.com/t/2007-chevrolet-silverado-1500-rough-idle/160418/2 "2020-03-06T05:35:39Z")

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Is the idle quality so bad that it needs attention? If there is a misfire the check engine light should be on.

> [@julie35](#):
>
> any ideas why the cap and coil are failing at this rate?

You should examine these parts before replacing them, you might be replacing good parts.

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**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\
**Post date:** [March 7, 2020, 12:34am UTC](https://community.cartalk.com/t/2007-chevrolet-silverado-1500-rough-idle/160418/3 "2020-03-07T00:34:30Z")

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Uhmm… I hate to tell you this but the 2007 Chevy doesn’t have a cap and rotor unless the engine from a much earlier car was installed.

Edit: Unless you have a 6 cylinder engine. But you didn’t tell us what engine you had. Those still had caps and rotors. The V8s did not.

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**Author:** ![kurtwm1](https://avatars.discourse-cdn.com/v4/letter/k/13edae/32.png) [@kurtwm1](https://community.cartalk.com/u/kurtwm1)\
**Post date:** [March 7, 2020, 12:58am UTC](https://community.cartalk.com/t/2007-chevrolet-silverado-1500-rough-idle/160418/4 "2020-03-07T00:58:53Z")

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You could buy a $10 idle air control valve and see if that helps. I wouldn’t even bother attempting to clean the current one since new ones are inexpensive and only takes minutes to change.